package com.ruoyi.web.controller.common;

import com.jcraft.jsch.SftpException;
import com.minglv.mini.tools.DateUtil;
import com.ruoyi.common.config.RuoYiConfig;
import com.ruoyi.common.core.domain.AjaxResult;
import com.ruoyi.common.utils.SftpUtil;
import com.ruoyi.common.utils.StringUtils;
import com.ruoyi.common.utils.file.FileUploadUtils;
import com.ruoyi.common.utils.file.FileUtils;
import com.ruoyi.common.utils.file.MimeTypeUtils;
import com.ruoyi.framework.config.ServerConfig;
import io.swagger.annotations.Api;
import io.swagger.annotations.ApiOperation;
import org.apache.commons.io.IOUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.http.MediaType;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.multipart.MultipartFile;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.util.ArrayList;
import java.util.List;
import java.util.Random;
import java.util.UUID;

/**
 * 通用请求处理
 * 
 * @author ruoyi
 */
@RestController
@RequestMapping("/common")
@Api(tags = "AA-图片上传")
public class CommonController
{
    private static final Logger log = LoggerFactory.getLogger(CommonController.class);

    @Autowired
    private ServerConfig serverConfig;

    private static final String FILE_DELIMETER = ",";

    /**
     * 通用下载请求
     * 
     * @param fileName 文件名称
     * @param delete 是否删除
     */
    @GetMapping("/download")
    public void fileDownload(String fileName, Boolean delete, HttpServletResponse response, HttpServletRequest request)
    {
        try
        {
            if (!FileUtils.checkAllowDownload(fileName))
            {
                throw new Exception(StringUtils.format("文件名称({})非法，不允许下载。 ", fileName));
            }
            String realFileName = System.currentTimeMillis() + fileName.substring(fileName.indexOf("_") + 1);
            String filePath = RuoYiConfig.getDownloadPath() + fileName;

            response.setContentType(MediaType.APPLICATION_OCTET_STREAM_VALUE);
            FileUtils.setAttachmentResponseHeader(response, realFileName);
            FileUtils.writeBytes(filePath, response.getOutputStream());
            if (delete)
            {
                FileUtils.deleteFile(filePath);
            }
        }
        catch (Exception e)
        {
            log.error("下载文件失败", e);
        }
    }

    /**
     * 通用上传请求（单个）
     */
    @PostMapping("/upload")
    public AjaxResult uploadFile(MultipartFile file) throws Exception
    {
        try
        {
            // 上传文件路径
            String filePath = RuoYiConfig.getUploadPath();
            // 上传并返回新文件名称
            String fileName = FileUploadUtils.upload(filePath, file);
            String url = serverConfig.getUrl() + fileName;
            AjaxResult ajax = AjaxResult.success();
            ajax.put("url", url);
            ajax.put("fileName", fileName);
            ajax.put("newFileName", FileUtils.getName(fileName));
            ajax.put("originalFilename", file.getOriginalFilename());
            return ajax;
        }
        catch (Exception e)
        {
            return AjaxResult.error(e.getMessage());
        }
    }

    /**
     * 通用图片上传请求
     * 
     * @param file 需要上传的图片文件
     * @return 上传结果及文件访问路径
     * @throws Exception 上传过程中可能抛出的异常
     */
    @ApiOperation("小程序端通用图片上传请求")
    @PostMapping("/commonUpload")
    public AjaxResult uploadCommonFile(MultipartFile file)throws Exception{
        FileOutputStream fos = null;
        try{
            // 检查文件扩展名是否为允许的图片格式
            if (!FileUploadUtils.isAllowedExtension(FileUploadUtils.getExtension(file), MimeTypeUtils.IMAGE_EXTENSION)) {
                return AjaxResult.error("上传图片格式错误");
            }

            // 构建文件保存路径
            String path =  File.separator + "upload" + File.separator + "imgs" + File.separator + DateUtil.format(DateUtil.now(),"yyyyMMdd");
            String savapath = FileUploadUtils.getDefaultBaseDir() + path ;
            Random random = new Random();
            Integer num = random.nextInt(900) + 100;
            String fileName = UUID.randomUUID().toString() + num + ".jpg";
            File absoluteFile = FileUploadUtils.getAbsoluteFile(savapath, fileName);
            fos = new FileOutputStream(absoluteFile);
            fos.write(file.getBytes());
            AjaxResult ajax = AjaxResult.success();
            ajax.put("path",path + File.separator + fileName);
            return ajax;
        }finally {
            IOUtils.close(fos);
        }
    }

    /**
     * 按照原有pc官网方式图片上传律师请求
     *
     * @param file 需要上传的图片文件
     * @return 上传结果及文件访问路径
     * @throws Exception 上传过程中可能抛出的异常
     */
    @ApiOperation("按照原有pc官网方式图片上传律师请求")
    @PostMapping("/minglvUploadFile")
    public AjaxResult minglvUploadFile(MultipartFile file) throws Exception {
        FileOutputStream fos = null;
        try {
            // 检查文件扩展名是否为允许的图片格式
            if (!FileUploadUtils.isAllowedExtension(FileUploadUtils.getExtension(file), MimeTypeUtils.IMAGE_EXTENSION)) {
                return AjaxResult.error("上传图片格式错误");
            }

            // 构建文件保存路径
            String path = File.separator + "files" + File.separator + "expert";
            String savapath = FileUploadUtils.getDefaultBaseDir() + path;
            Random random = new Random();
            Integer num = random.nextInt(900) + 100;
            String fileName = UUID.randomUUID().toString() + num + "." + FileUploadUtils.getExtension(file);
            File absoluteFile = FileUploadUtils.getAbsoluteFile(savapath, fileName);
            fos = new FileOutputStream(absoluteFile);
            fos.write(file.getBytes());
            AjaxResult ajax = AjaxResult.success();
            ajax.put("path", path + File.separator + fileName);
            return ajax;
        } finally {
            IOUtils.close(fos);
        }
    }


    @ApiOperation("原pc官网图片上传")
    @PostMapping("/ftpCommonUpload")
    public AjaxResult ftpUploadCommonFile(MultipartFile file) throws Exception {
        SftpUtil sftpUtil = new SftpUtil();
        try {
            // 检查文件扩展名是否为允许的图片格式
            if (!FileUploadUtils.isAllowedExtension(FileUploadUtils.getExtension(file), MimeTypeUtils.IMAGE_EXTENSION)) {
                return AjaxResult.error("上传图片格式错误");
            }

            // 构建文件保存路径
            String remoteDirectory = "/www/wwwroot/fa.bjsky.top/Public/files/avatar";
            Random random = new Random();
            Integer num = random.nextInt(900) + 100;
            String fileName = UUID.randomUUID().toString() + num + ".jpg";
            sftpUtil.connect("123.56.110.242", 22, "root", "Mov23Us@h@");
            // 上传文件
            sftpUtil.upload(remoteDirectory, fileName, file.getInputStream());
            AjaxResult ajax = AjaxResult.success();
            ajax.put("path", "/files/avatar" + File.separator + fileName);
            log.info("文件上传成功: {} -> {}/{}", file.getOriginalFilename(), remoteDirectory, fileName);
            return ajax;
        } catch (FileNotFoundException e) {
            log.error("本地文件未找到: {}", file.getOriginalFilename(), e);
        } catch (SftpException e) {
            log.error("SFTP操作异常", e);
        } catch (Exception e) {
            log.error("连接SFTP服务器异常", e);
        } finally {
            // 关闭连接
            sftpUtil.disconnect();
        }
        return AjaxResult.error("上传失败");
    }
    /**
     * 通用上传请求（多个）
     */
    @PostMapping("/uploads")
    public AjaxResult uploadFiles(List<MultipartFile> files) throws Exception
    {
        try
        {
            // 上传文件路径
            String filePath = RuoYiConfig.getUploadPath();
            List<String> urls = new ArrayList<String>();
            List<String> fileNames = new ArrayList<String>();
            List<String> newFileNames = new ArrayList<String>();
            List<String> originalFilenames = new ArrayList<String>();
            for (MultipartFile file : files)
            {
                // 上传并返回新文件名称
                String fileName = FileUploadUtils.upload(filePath, file);
                String url = serverConfig.getUrl() + fileName;
                urls.add(url);
                fileNames.add(fileName);
                newFileNames.add(FileUtils.getName(fileName));
                originalFilenames.add(file.getOriginalFilename());
            }
            AjaxResult ajax = AjaxResult.success();
            ajax.put("urls", StringUtils.join(urls, FILE_DELIMETER));
            ajax.put("fileNames", StringUtils.join(fileNames, FILE_DELIMETER));
            ajax.put("newFileNames", StringUtils.join(newFileNames, FILE_DELIMETER));
            ajax.put("originalFilenames", StringUtils.join(originalFilenames, FILE_DELIMETER));
            return ajax;
        }
        catch (Exception e)
        {
            return AjaxResult.error(e.getMessage());
        }
    }

    /**
     * 本地资源通用下载
     */
    @GetMapping("/download/resource")
    public void resourceDownload(String resource, HttpServletRequest request, HttpServletResponse response)
            throws Exception
    {
        try
        {
            if (!FileUtils.checkAllowDownload(resource))
            {
                throw new Exception(StringUtils.format("资源文件({})非法，不允许下载。 ", resource));
            }
            // 本地资源路径
            String localPath = RuoYiConfig.getProfile();
            // 数据库资源地址
            String downloadPath = localPath + FileUtils.stripPrefix(resource);
            // 下载名称
            String downloadName = StringUtils.substringAfterLast(downloadPath, "/");
            response.setContentType(MediaType.APPLICATION_OCTET_STREAM_VALUE);
            FileUtils.setAttachmentResponseHeader(response, downloadName);
            FileUtils.writeBytes(downloadPath, response.getOutputStream());
        }
        catch (Exception e)
        {
            log.error("下载文件失败", e);
        }
    }
}
